Observing the Inverse melting of the vortex lattice in Bi$_2$Sr$_2$CaCu$_2$O$_8$ with point defects using Langevin simulations with vortex shaking

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Langevin dynamics simulations of the vortex matter in the highly-anisotropic high-temperature superconductor Bi$_2$Sr$_2$CaCu$_2$O$_8$ were performed. We introduced point defects as a smoothened distribution of a random potential. Both the electromagnetic and Josephson interactions among pancake vortices were included. A special shaking and annealing process was introduced to let the system approach the equilibrium configuration. We are able to see the inverse melting transition from the Bragg-glass to the amorphous vortex glass state, in agreement with recent experiments.
RevTex 4, 5 figures

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Superconductivity, Disordered Systems and Neural Networks

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http://salesiana.dossiersoluciones.com/handle/123456789/146154

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0801.2701
 http://arxiv.org/abs/0801.2701

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arXiv